NRF54H20 GPIO CONFIG ISSUE

[summer]

Hi,

     I used the NCS SDK, the sdk version number is v2.7.99-cs2, and the chip I tested is NRF54H20.

     I used registers to configure GPIO. I tested GPIO P1.00, P1.01, and P1.02,These three GPIOs were configured as output, and then flipped every 100ms in the main loop, I found that these three GPIOs did not take effect, this is the program I configured:

   

   PS: I don't want to use the configuration method in GPIo.h in the NCS SDK, I want to use the register to configure GPIO myself, is there anything wrong with my method?

     

[hmolesworth]

Ah, I only have access to nRF54L15, not nRF54H20 data:

// SPU00 Supports FEATURE.GPIO[n]  GPIO P2 and x00 UARTE00 is 74-64   = SPU00 Index 10
// SPU10 Supports                  RADIO   and x10
// SPU20 Supports FEATURE.GPIO[n]  GPIO P1 and x20 UARTE20 is 198-192 = SPU20 Index 6
// SPU30 Supports FEATURE.GPIO[n]  GPIO P0 and x30 UARTE30 is 260-256 = SPU30 Index 4

[Edvin]

Sorry for the delay.

In order to control the GPIO from the application core, you need to give the application core access/permission to do so. So you need an overlay file with the pins that you plan to use with the compatible nordic,gpio-pins.

Please see:

https://docs.nordicsemi.com/bundle/ncs-2.8.0/page/nrf/app_dev/config_and_build/hardware/use_gpio_pin_directly.html

You only need the first part of the suggested overlay file. So in your application's root folder, add a file called nrf54h20dk/nrf54h20/cpuapp.overlay, and add this to it:

/ {
        user_dbg_pin: user-dbg-pin {
                compatible = "nordic,gpio-pins";
                gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>, <&gpio1 1 GPIO_ACTIVE_HIGH>, <&gpio1 2 GPIO_ACTIVE_HIGH>;
                status = "okay";
        };
};

This will tell the nRF that it is the application core (cpuapp) that it owns / has permission to control these three GPIOs. 

I'll attach the modified hello_world application that I used to test this:

hello_world_toggle_pin.zip

Best regards,

Edvin